| 摘要 |
PURPOSE:To heighten the density of cores and to prevent disorder of arrangement by piling plural strands of optical fiber to multilayer in rectangular form and covering the outer periphery with a plastics. CONSTITUTION:In the multilayer piled rectangular optical core, plural strands 1 of optical fiber are arranged laterally in a line with adjoining ones contacting with each other, and the same number of strands 1 are similarly arranged laterally in a line on the above-mentioned layer with the upper and lower layers contacting with each other, and as a whole the strands are piled in rectangular form. Primary cover of silicone resin is provided on the outer periphery of optical fiber 1A of the strands 1, and a buffer layer 1C made of highly elastic silicone resin is provided on the outer periphery. The layer 1C is somewhat viscous and acts for maintaining and combining of arrangement. Outer periphery of the optical fiber strand assembly is covered with plastic cover 2 such as nylon in flat rectangular form. |
